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A triangular platge of uniform thickness...

A triangular platge of uniform thickness and densilty ismade to rotate about an axis perpendicular to the plane of the paper an a. passing through `A` b. passing through `B`, by the application of some foce `F` at `C` (mid point of `AB`) as show in figure. In which case is angular acceleration more?

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`tau=I_(a)`, therefore `alpha=tau/L`
`tau=` Force `xx` Perpendiclar distance
Torque is the same in both the cases. But since I will be different due to different mass distribution about the axis, therefore `alpha` will be different.
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